外研版必修3高一课时演练英语试卷5（带解析）

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Probably you have seen photographs of the Grand Canyon,the great valley in the desert country of Arizona.But you must go there yourself to feel its true size and beauty.The Grand Canyon is one of the greatest natural wonders of the world.
 
The Colorado River formed the Grand Canyon over millions of years.Slowly,the river cut down through hard rocks.At the same time,the land was rising.Today,the canyon is one and a half kilometers deep and 446 kilometers long.The oldest rocks at the bottom of the canyon are more than one billion years old.The width varies from about 200 meters to 29 kilometers across.The rim or top of the canyon is about 2,300 meters above sea level on the South Rim,and about 3,000 meters on the other side,the North Rim.As a result,there are different kinds of plants and animals on opposite sides of the canyon.The South Rim is a dry desert country.The North Rim has tall forests.
 
The canyon looks different at different times of a day,and in different seasons and weather.At sunrise and sunset the black,gold,brown,and orange colours of the rocks are especially clear and bright.In winter,the canyon is partly covered with snow.
 
The view from the South Rim of the Grand Canyon is the best.Most visitors come to the South Rim and stay in campgrounds or hotels.Every point along the canyon’s edge offers a different view.
 
The North Rim of the Canyon is quieter.It takes all day to drive there from the South Rim because there is only one bridge across the Colorado River.On the way,you go through Navajo Indian lands,and a colourful pink desert called “The Painted Desert”.
 
You can walk down into the Grand Canyon,or you can go down on the back of a mule.You can also take a boat trip down the Colorado River,and camp on the beaches at night.But whether you see the Grand Canyon from the top or the bottom,it will be an experience that you will never forget.
 
【小题1】The best way to feel the size and beauty of the Grand Canyon is    .A．to see its photographsB．to listen to the report about itC．to travel there yourselfD．to watch the TV program about it【小题2】What made the Grand Canyon?A．The earthquake.B．The water from the Colorado River.C．The American people.D．The strong wind.【小题3】The sea level on both sides of the Grand Canyon is    .A．the sameB．changing with timeC．differentD．very low【小题4】From the passage we can know that the    of the canyon is different at different times.A．lengthB．sceneryC．width D．Height＜/td>